Clark's Nutcracker (Nucifraga columbiana) Predation on Tadpoles of the Columbia Spotted Frog (Rana luteiventris)

2002 ◽  
Vol 83 (2) ◽  
pp. 59 ◽  
Author(s):  
David S. Pilliod
Keyword(s):  
Nucifraga Columbiana ◽  
Rana Luteiventris ◽  
Clark's Nutcracker

Development and characterization of thirteen microsatellite loci in Clark’s nutcracker (Nucifraga columbiana)

2012 ◽  
Vol 5 (2) ◽  
pp. 303-305 ◽  
Author(s):  
Sara J. Oyler-McCance ◽  
Jennifer A. Fike ◽  
Todd A. Castoe ◽  
Diana F. Tomback ◽  
Michael B. Wunder ◽  
...  
Keyword(s):  
Microsatellite Loci ◽  
Nucifraga Columbiana ◽  
Clark's Nutcracker

scholarly journals Examination of long-term visual memorization capacity in the Clark’s nutcracker (Nucifraga columbiana)

2018 ◽  
Vol 25 (6) ◽  
pp. 2274-2280
Author(s):  
Muhammad A. J. Qadri ◽  
Kevin Leonard ◽  
Robert G. Cook ◽  
Debbie M. Kelly
Keyword(s):  
Nucifraga Columbiana ◽  
Clark's Nutcracker

Cache-Site Selection in Clark's Nutcracker (Nucifraga Columbiana)

The Auk ◽  
2011 ◽  
Vol 128 (2) ◽  
pp. 237-247 ◽  
Author(s):  
Teresa J. Lorenz ◽  
Kimberly A. Sullivan ◽  
Amanda V. Bakian ◽  
Carol A. Aubry
Keyword(s):  
Site Selection ◽  
Nucifraga Columbiana ◽  
Clark's Nutcracker

Assessing Clark's nutcracker seed-caching flights using maternally inherited mitochondrial DNA of whitebark pine

2002 ◽  
Vol 32 (6) ◽  
pp. 1103-1107 ◽  
Author(s):  
Bryce A Richardson ◽  
Ned B Klopfenstein ◽  
Steven J Brunsfeld
Keyword(s):  
Mitochondrial Dna ◽  
Spatial Scales ◽  
Random Pattern ◽  
Fine Scale ◽  
Whitebark Pine ◽  
Coarse Scale ◽  
Nucifraga Columbiana ◽  
Seed Caching ◽  
Clark's Nutcracker ◽  
Haplotype Frequencies

Maternally inherited mitochondrial DNA haplotypes in whitebark pine (Pinus albicaulis Engelm.) were used to examine the maternal genetic structure at three hierarchical spatial scales: fine scale, coarse scale, and inter population. These data were used to draw inferences into Clark's nutcracker (Nucifraga columbiana Wilson) seed-caching flight distances. Statistical analyses of fine-scale and coarse-scale distribution of haplotypes showed no apparent signs of deviation from a random pattern. This suggests nutcrackers are effective in dispersal of seed within populations, which is consistent with data gathered on nutcracker seed-caching behavior. However, the lack of homogeneity in haplotype frequencies among populations indicates nutcrackers rarely disperse seeds across large gaps (>20 km) in subalpine habitat.

scholarly journals Extreme environmental variation sharpens selection that drives the evolution of a mutualism

2007 ◽  
Vol 274 (1620) ◽  
pp. 1799-1805 ◽  
Author(s):  
Adam M Siepielski ◽  
Craig W Benkman
Keyword(s):  
Adaptive Evolution ◽  
Species Interactions ◽  
Evolutionary Dynamics ◽  
Phenotypic Selection ◽  
Whitebark Pine ◽  
Nucifraga Columbiana ◽  
Seed Predator ◽  
Clark's Nutcracker ◽  
Small Seed ◽  
Seed Crops

The importance of infrequent events for both adaptive evolution and the evolution of species interactions is largely unknown. We investigated how the infrequent production of large seed crops (masting) of a bird-dispersed tree (whitebark pine, Pinus albicaulis ) influenced phenotypic selection exerted by its primary avian seed predator–disperser, the Clark's nutcracker ( Nucifraga columbiana ). Selection was not evident during common years of low seed abundance, whereas it was replicated among areas and favoured traits facilitating seed dispersal during infrequent years of high seed abundance. Since nutcrackers act mostly as seed predators during small seed crops but as seed dispersers during the largest seed crops, trees experienced strong selection from nutcrackers only during infrequent years when the interaction was most strongly mutualistic. Infrequent events can thus be essential to both adaptive evolution and the evolutionary dynamics of species interactions.

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